PFAS in Period Pads, Which Brands Grade Best and Worst

Based on available materials and public disclosure data, three O.b-branded period pads currently grade "Good" for lower PFAS-related concern, while a fourth O.b product, the Capri Plus Mini, grades "Poor." The clear standout in our database is the OB O.b Pro Comfort Super Plus 16 pad, which scores 70/100 as a model-based estimate from materials and packaging disclosure, not a lab test. That does not mean the product is "PFAS-free" or "safe" in an absolute sense; it means our review of reviewed sources found no evidence of PFAS in its disclosed materials, which is a meaningfully better starting point than the Poor-graded pad discussed below.

This guide compares all four graded period pad products side by side, explains what separates a "Good" grade from a "Poor" one, and flags what shoppers should watch for when picking a pad. For a broader side-by-side of tested products, use our product finder, and if you're comparing pads against other period-care formats, see our tampons and period underwear category pages.

Summary Comparison

Product	PFAS Grade (Model Estimate)	Verdict
OB O.b Pro Comfort Super Plus 16 pad	Good (70/100)	Lower concern based on reviewed materials; a reasonable default pick
OB / Maternity Pad Maxi Super Absorbency NON241279	Good (70/100)	Lower concern; comparable profile to the Pro Comfort line
OB OC BON Ultra Thin Wings Sanitary Pads Medium 4P	Good (70/100)	Lower concern; thin-profile design with the same tier score
OB Capri Plus OB Pads - Mini	Poor (25/100)	Higher modeled concern; worth avoiding if alternatives are available

The Good-Graded Pads, In Detail

OB O.b Pro Comfort Super Plus 16 pad

This is the highest-scoring period pad in our database at 70/100, a model-based estimate from materials and public disclosure, not a lab test. Materials disclosed for this product align with standard absorbent core and topsheet construction typical of mainstream sanitary pads; based on available materials and data, reviewed sources did not surface evidence of intentionally added PFAS in this SKU. Brand-stated claims about the product's comfort and absorbency come from the manufacturer and have not been independently lab-verified for PFAS content in the sources we reviewed.

• Pros, Highest score among graded period pads; widely available; no evidence of PFAS found in reviewed sources.
• Cons, A 70/100 is "Good," not a perfect or "PFAS-free" score; absorbent-core chemistry in mainstream pads generally isn't independently third-party tested for fluorinated compounds, so absence of evidence is not the same as lab-confirmed absence.

OB / Maternity Pad Maxi Super Absorbency NON241279

This maternity-focused maxi pad shares the same 70/100 "Good" tier as the Pro Comfort pad above. It's built for heavier postpartum flow, and based on available materials and data, its disclosed construction does not show flagged PFAS-associated components in the sources we reviewed.

• Pros, Same lower-concern tier as O.b's flagship pad; higher absorbency for postpartum use; no evidence of PFAS found in reviewed sources.
• Cons, Maternity pads are typically thicker and used for extended periods immediately after birth, when skin sensitivity is high, so material transparency matters even at a "Good" grade; the score is a directional estimate, not a certification.

OB OC BON Ultra Thin Wings Sanitary Pads Medium 4P

This ultra-thin winged pad rounds out the trio of Good-graded O.b products, also at 70/100. Thin-profile pads sometimes rely on different film or adhesive chemistries than bulkier pads, but in this case the modeled score lands in the same tier as its siblings.

• Pros, Thin, discreet design; same lower-concern grade as other Good-tier O.b pads; no evidence of PFAS found in reviewed sources.
• Cons, Thin construction can mean less absorbent core margin for heavier days; as with all pads on this list, the grade reflects disclosed materials, not an independent lab audit specific to this SKU.

The Poor-Graded Pad

OB Capri Plus OB Pads - Mini

This product scores 25/100, "Poor," a model-based estimate built from available materials disclosure and public data, not a direct lab assay. A low score in our system generally reflects a combination of limited material transparency and/or components more commonly associated with PFAS use in absorbent hygiene products. This does not mean PFAS has been laboratory-confirmed in this specific pad; it means the disclosed information available to us raised more red flags than it resolved.

• Pros, Compact "mini" format may suit lighter flow days; widely recognized O.b product line.
• Cons, Lowest score of any graded period pad in our database; materials disclosure is less reassuring than its Good-tier siblings; shoppers prioritizing lower PFAS-related concern have better-graded alternatives in the same general product family.

What to Avoid

Based on our review process across period care and other absorbent or moisture-resistant product categories, a few patterns tend to correlate with lower grades and warrant a closer look before you buy.

• Vague "leak-proof" or "stay-dry" marketing without material specifics. Brand-stated performance claims are not the same as verified material composition; a pad can perform well and still carry an unclear PFAS profile.
• Products with minimal public ingredient or material disclosure. The less a brand publishes about topsheet, core, and adhesive materials, the harder it is to model lower concern with confidence, which is part of why lower-disclosure products tend to score worse.
• Assuming "Good" equals "PFAS-free." Even our top-graded pads at 70/100 are described here as lower concern based on reviewed materials, not as certified free of PFAS. No product in this comparison set has independent third-party lab verification cited in our sources.
• Ignoring cross-category exposure. Period pads are one exposure pathway among several; if you're also concerned about fluorinated chemicals in other routines, check our guides on period underwear makeup, and water filters.

Our Pick

Based on available materials and data, the OB O.b Pro Comfort Super Plus 16 pad is our top recommendation among the period pads currently graded in our database, tied at the top of the tier with the OB / Maternity Pad Maxi Super Absorbency NON241279 and the OB OC BON Ultra Thin Wings Sanitary Pads Medium 4P. All three carry a 70/100 "Good" grade, a model-based estimate from materials and public disclosure rather than a lab certification, and reviewed sources show no evidence of PFAS in their disclosed materials. The OB Capri Plus OB Pads - Mini, by contrast, is the one product on this list we'd steer shoppers away from, given its 25/100 "Poor" grade. If you want to compare these against a wider set of period-care options, our product finder lets you filter by category and grade directly.

FAQ

Does a "Good" grade mean a period pad is PFAS-free?

No. A "Good" grade of 70/100 reflects a model-based estimate built from disclosed materials and public data, and it means reviewed sources found no evidence of PFAS in that product. It is not a lab certification and should not be read as a guarantee the product is PFAS-free or "safe."

Why did the OB Capri Plus Mini score so much lower than other O.b pads?

Our model weighs available material disclosure and known PFAS-associated component patterns. The Capri Plus Mini's disclosed information produced a lower score (25/100, "Poor") than its sibling products, which suggests less favorable material transparency, though this is not a confirmed lab finding of PFAS presence.

Is there a proven health risk from PFAS in period products?

Some research has associated PFAS exposure with various health effects, but association is not the same as causation, and exposure levels, duration, and individual factors all matter. If you have specific health concerns, consult a medical professional; for product comparisons, see our tampons and period underwear pages alongside this pad guide.